5,438 Senior Developers jobs in the United Kingdom
Java API specialist Developers
Posted 24 days ago
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Title: Java API specialist Developers
Experience: 8+years
Location: London
Work Type: Hybrid 3days/Week
Contract duration: 6 months
• 5+ years development experience using TDD in Java 8+
• Experience developing with Spring and SpringBoot
• Experience developing RESTful web services on a Microservices architecture
• Expert in Agile methodologies and Scrum framework
• Hands-on Experience in CI/CD pipelines
• Knowledge of web security, API security and common vulnerability remediation
• DevOps experience
• Strong background with automated testing
• TMF Framework knowledge and experience
• APIGEE API knowledge and experience
- Candidate should clear Codility Test
- Customer technical interview covers on Open API implementation and Contract type approach.
Java Developers - SC Clearance - 100% Remote
Posted 3 days ago
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Java Developers - 100% Remote role
SC Clearance is preferred but will sponsor exceptional applicants
Overview of the Java Developers role
We are looking for highly skilled Java Developers to join a secure government project with a critical deadline. This is an opportunity to work on a large-scale system where your expertise in Java, Spring Boot, and AWS will be essential. You will be part of a collaborative team, building scalable solutions and solving complex problems that have a real impact.
Key responsibilities for Java Developers
Design, develop, and deploy backend services using Java and Spring Boot
Build and maintain scalable APIs
Analyse schemas and write optimised SQL queries against large datasets
Work closely with DevOps on Docker containerisation and cloud deployment in AWS
Contribute to architectural decisions and shape technical roadmaps
Write clean, well-tested, and maintainable code
Perform code reviews and mentor junior engineers
Essential skills for Java Developers
Strong expertise in Java (8/11/17+) and core libraries
Proven experience with Spring Boot and microservices
Strong background in AWS (EC2, S3, Lambda, IAM)
Knowledge of Kafka or similar messaging systems
Advanced SQL skills with query optimisation
Experience building REST / JSON APIs
Proficiency with Docker for local and cloud deployments
Excellent communication skills
Nice-to-have skills for Java Developers
Knowledge of JavaScript & ReactJS
Familiarity with Amazon Aurora / RDS
Experience with JUnit and testing frameworks
To apply for the Java Developers role, please send your CV by pressing the apply button.
Senior Front-end Developers – Government, Open-source, HTML, CSS, JavaScript, TypeScript, NodeLS,...
Posted 1 day ago
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Senior Front-end Developers – Government, Open-source, HTML, CSS, JavaScript, TypeScript, NodeLS, SQL, API, Cloud base, Hybrid, Newcastle, Leeds
Our client within the public sector is looking for an experienced Senior Front-end Developer to join a dynamic team dedicated to delivering accessible, high-quality digital services. You will lead the development of reusable UI components and patterns, ensuring compliance with industry standards and accessibility guidelines. Collaborate with a community of developers to create consistent, efficient solutions that serve a wide range of users across multiple devices and browsers.
Key requirements include significant experience in large-scale front-end development, proficiency with open-source tools and frameworks, and a strong understanding of integrating front-end systems with back-end services in cloud environments such as AWS or Azure. You should be a proactive leader with a passion for innovation, quality, and continuous improvement.
Key experience includes:
- Significant experience in large-scale front-end development for systems with high user loads and complex processes.
- Proficiency with open-source tools and frameworks such as HTML, CSS, JavaScript (client and server-side), TypeScript, and modern front-end frameworks.
- Proven ability in delivering comprehensive unit testing using frameworks like Jest or Mocha.
- Extensive experience integrating front-end systems with back-end services, databases (SQL/NoSQL), caching tools like Redis, and API microservices within cloud environments (AWS or Azure).
Minorities, women, LGBTQ+ candidates, and individuals with disabilities are encouraged to apply.
Interviews will take place next week, so please apply immediately to be considered for this contract role.
Senior Front-end Developers – Government, Open-source, HTML, CSS, JavaScript, TypeScript, NodeLS,...
Posted today
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Software Engineer (Developer Enablement)
Posted 24 days ago
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**Opportunities in CTO**
There are many exciting opportunities for you, and flexibility to move between multiple projects if that's something you'd enjoy.
**Release On Demand** allows engineering teams to deploy code to production frequently, whilst making it easy to follow best practices in our highly regulated industry. The 3-year-old platform used by 1,000s of engineer's bank-wide, is projected to deliver $50 million in savings this year alone. The platform needs to continue its huge success by continuing to scale and provide more opportunities for developer productivity
**SDLC Automation** is a greenfield project that builds on the success we've had in automating the SDLC and takes it further. This blue-sky project looks at ways we can greatly improve the SDLC process at Citi, taking ideas like grading engineering teams and rewarding those who follow best practices, perhaps moving them from manual approval process to an automatic one. The use of Artificial Intelligence is highly likely.
**Dev hub** is the Engineers homepage where engineers can see all of parts of the SDLC, such as code reviews, JIRAS and deployments, all tied together into single workflow. The next-generation greenfield Developer Experience (DevEx) platform aims to save days of engineering time per engineer per year at one of the largest engineering organisations in the world. Transforming the way engineers work at Citi.
**AI Tooling** - The use of AI is becoming ever more evident in the software platforms we build and the AI tooling team are a cross functional team that work across the other platforms supplementing their capabilities with AI. A small but expanding team has provided numerous AI enhancements such as developer documentation chatbots, log file analysis, release summarisation etc
**Why you'll love working here:**
+ You'll work in a small, agile team, in an organisation led by technologists, building the best tools for fellow developers.
+ You'll impact the daily experience of tens of thousands of engineers at one of the largest engineering organisations in the world.
+ You get to work in the fun part of the bank, the Chief Technology Office, building cool things.
**What you will bring (depending on role)**
A selection of the tools and capabilities required across our platforms. We value muti-disciplined polyglot engineers but also understand and support the need for specialisms too across the wider department.
**UI/UX**
+ Strong front-end engineering skills: Typescript (JS), React, CSS, and data visualisation tools like d3.js.
+ Strong product/design skills: Proficient in Figma, interaction design, component reuse
+ Evaluative user testing/interviewing
+ Comfortable taking part in either formal or informal user research: you talk to users early and often, integrating insights into your work.
+ Ability to innovate: Excited to push the boundaries in design and engineering with your unique skillset that allows you to bring strengths from both worlds.
**Server**
+ Strong server-side engineering skills: Kotlin (Java 21), building and consuming RESTful APIs, asynchronous programming.
+ Proficiency with relational and/or NoSQL databases: PostgreSQL, MongoDB.
+ Experience with message queuing systems: Apache Kafka.
+ SRE/DevOps - Experience with scalability & Observability
+ Deep understanding of containerization (Docker) and orchestration (Kubernetes).
+ Familiarity with CI/CD tools like Tekton and deployment automation platforms like Harness.
+ Comfortable collaborating with product, design, and UI engineers, product managers, and other stakeholders to understand requirements and deliver robust backend solutions.
**Tools you'll use (depending on role)**
+ _UI/UX_ : React, TypeScript, Rest APIs, VS Code, Figma, Storybook and internal design systems
+ _Server_ : Kotlin, Spring Boot, PostgreSQL, MongoDB, Apache Kafka, Docker, Kubernetes, Helm, Tekton, Harness
+ _SRE_ : OpenShift, Tekton, Harness, .
+ Mac or PC - It's up to you.
+ Access to time-saving AI tools such as GitHub Copilot and Cognition.ai's Devin
We appreciate top talent moves fast, we will try to get the interviews done as quickly as you can. You will have the chance to speak to our recruitment team at various points during your process.
**Don't tick every box?**
Don't worry, if you're talented our team would like to chat to you. Our team have diverse backgrounds with former entrepreneurs, multi-disciplined practitioners, and people from all over the world. We have many roles within the same Developer Enablement group that are open, and we can find a role, or even create one that fits you.
**What we'll provide you**
By joining Citi Belfast, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:
+ 27 days annual leave (plus bank holidays)
+ A discretional annual performance related bonus
+ Private Medical Care & Life Insurance
+ Employee Assistance Program
+ Pension Plan
+ Paid Parental Leave
+ Special discounts for employees, family, and friends
+ Access to an array of learning and development resources
Visit our Global Benefits page to learn more. ( these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive.
#LI-RH4
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**Job Family Group:**
Technology
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**Job Family:**
Applications Development
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**Time Type:**
Full time
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**Most Relevant Skills**
Please see the requirements listed above.
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**Other Relevant Skills**
For complementary skills, please see above and/or contact the recruiter.
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_Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law._
_If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review_ _Accessibility at Citi ( _._
_View Citi's_ _EEO Policy Statement ( _and the_ _Know Your Rights ( _poster._
Citi is an equal opportunity and affirmative action employer.
Minority/Female/Veteran/Individuals with Disabilities/Sexual Orientation/Gender Identity.
Software Engineer / Senior Software Engineer
Posted 9 days ago
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**The Position**
A healthier future. It's what drives us to innovate. To continuously advance science and ensure everyone has access to the healthcare they need today and for generations to come. Creating a world where we all have more time with the people we love. That's what makes us Roche.
Advances in AI, data and computational sciences are transforming drug discovery and development. Roche's Research and Early Development organizations at Genentech (gRED) and Pharma (pRED) have demonstrated how these technologies accelerate R&D, leveraging data and novel computational models to drive impact. Seamless data sharing and access to models across gRED and pRED are essential to maximising these opportunities. The Computational Sciences Center of Excellence (CS CoE) is a strategic, unified group whose goal is to harness the transformative power of data and Artificial Intelligence (AI) to assist our scientists in both pRED and gRED to deliver more innovative and life-changing medicines for patients worldwide.
Within the CS CoE organisation, the Data and Digital Catalyst (DDC) organization leads the modernization of our computational and data ecosystems by integrating digital technologies across Research and Early Development to empower stakeholders, advance data-driven science and accelerate decision-making.
The Solutions team within the DDC Organization develops modernized and interconnected computational and data ecosystems. The Data Ecosystem is foundational to building solutions that accelerate the work done by our Computational and Bench Scientists and enable ML/AI tool creation and adoption. Our team specializes in building Data Pipelines and Applications for data acquisition, collection, storage, transformation, linkage and sharing.
As a Software Engineer on our Solutions Engineering team, you will build robust, scalable, and reusable capabilities for our shared data platform. You will work closely with Data Engineers, Product Leaders, and scientific partners to design and implement systems that unlock the potential of our diverse scientific data. Your work will directly contribute to accelerating the discovery and development of life-changing treatments for patients by building the modern ecosystem that captures, moves, and prepares scientific data for analysis.
**The Opportunity**
+ Ensure technical excellence by delivering innovative, best-in-class data flows and pipelines across key scientific domains.
+ Promote the adoption of key trends and technologies by applying an Open Source, Cloud First, API First, and AI First approach to problem-solving.
+ Improve our data workflows and application architecture by leveraging standard patterns like microservices and event-driven design.
+ Integrate diverse data sets to power AI/ML, Natural Language Search, and downstream visualization and analytics tools.
+ Facilitate the implementation of cutting-edge AI models that take advantage of advances in machine learning.
+ Influence technical decisions around data workflows and application development in collaboration with key partners.
+ Learn and deeply understand our Data Ecosystem to drive continuous improvement and innovation.
**Who You Are**
You are a passionate engineer who cares about technical and product excellence, with a drive to build highly usable solutions. You thrive in a collaborative environment, leveraging modern development practices to translate complex challenges into effective technology solutions.
You bring the following qualifications:
+ A Bachelor's degree in Computer Science or a similar technical field, or equivalent experience, plus relevant software engineering experience.
+ Experience in full-stack development, with working knowledge of frontend (e.g., JavaScript) and backend (e.g., Python, Java) technologies.
+ Experience with databases, data analytics (SQL/NoSQL, ETL/ELT), and APIs (REST, GraphQL).
+ Experience working on cloud-native architectures in a public cloud environment, ideally AWS.
+ Strong oral and written communication skills and the ability to think strategically to optimize for long-term goals.
#ComputationCoE
**Who we are**
A healthier future drives us to innovate. Together, more than 100'000 employees across the globe are dedicated to advance science, ensuring everyone has access to healthcare today and for generations to come. Our efforts result in more than 26 million people treated with our medicines and over 30 billion tests conducted using our Diagnostics products. We empower each other to explore new possibilities, foster creativity, and keep our ambitions high, so we can deliver life-changing healthcare solutions that make a global impact.
Let's build a healthier future, together.
The statements herein are intended to describe the general nature and level of work being performed by employees, and are not to be construed as an exhaustive list of responsibilities, duties, and skills required of personnel so classified. Furthermore, they do not establish a contract for employment and are subject to change at the discretion of Roche Products Ltd. At Roche Products we believe diversity drives innovation and we are committed to building a diverse and flexible working environment. All qualified applicants will receive consideration for employment without regard to race, religion or belief, sex, gender reassignment, sexual orientation, marriage and civil partnership, pregnancy and maternity, disability or age. We recognise the importance of flexible working and will review all applicants' requests with care. At Roche difference is valued and we are proud to be an equal opportunity employer where you are encouraged to bring your whole self to work.
Software Engineer
Posted today
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Job Description
Software Engineer- Dorchester - 55k
Platform Recruitment has partnered with a cutting-edgeengineering company that designscomplex bespoke machinery andautomation systems. They're looking for a multi-skilled software engineer with a passion for robotics, automation, and solving real-world engineering problems.
Key Responsibilities:
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Develop and integrate C# .NET backend software for robotics and machine systems
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Build HMI interfaces using Blazor and WPF
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Program and commission industrial PLCs using IEC (phone number removed) languages
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Work with 2D/3D machine vision systems
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Integrate and control robotic systems
Key Skills:
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C# experience
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Background in robotics, automation, or machine control systems
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Experience with 3D vision, sensors, or point cloud data
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Strong communication skills and ability to work independently
The salary will be up to 55k depending on previous experiencewith great company benefits.
If you feel like you have the right skills and experience for this role, then please apply with a copy of your updated CV.
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Software Engineer
Posted today
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Software Engineer- Sheffield- 55k
Platform Recruitment has partnered with a cutting-edgeengineering company that designscomplex bespoke machinery andautomation systems. They're looking for a multi-skilled software engineer with a passion for robotics, automation, and solving real-world engineering problems.
Key Responsibilities:
-
Develop and integrate C# .NET backend software for robotics and machine systems
-
Build HMI interfaces using Blazor and WPF
-
Program and commission industrial PLCs using IEC (phone number removed) languages
-
Work with 2D/3D machine vision systems
-
Integrate and control robotic systems
Key Skills:
-
C# experience
-
Background in robotics, automation, or machine control systems
-
Experience with 3D vision, sensors, or point cloud data
-
Strong communication skills and ability to work independently
The salary will be up to 55k depending on previous experiencewith great company benefits.
If you feel like you have the right skills and experience for this role, then please apply with a copy of your updated CV.
Software Engineer
Posted today
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Job Description
We are looking for Software Engineers to drive forward the Defence sector within Electrical and Embedded Systems. This is an exciting opportunity to make a real difference to the client project that you support.
The Software Engineer will play a vital role in the software development lifecycle by ensuring that software solutions are developed in line with defined processes and industry standards to ensure the reliability, safety, and security of software products.
- Design and develop real-time embedded software solutions.
- Integrate and debug solutions on target hardware, addressing hardware/software integration issues.
- Target multiple real-time platforms (e.g., VxWorks, MicroC/OS, Linux, FreeRTOS) using ADA, C, JAVA and/or C++.
- Participate in various software lifecycle methodologies.
- Manage software requirements and traceability using industry best practices.
- Plan and execute software tests (Unit, Integration, System Level).
- Develop reusable software solutions.
- Document all aspects of the software production process according to company standards.
- A BEng/BSc (Hons) degree or equivalent in computing or a computing-related subject, or an alternative qualification with relevant experience.
Software Engineer
Posted today
Job Viewed
Job Description
We are looking for Software Engineers to drive forward the Defence sector within Electrical and Embedded Systems. This is an exciting opportunity to make a real difference to the client project that you support.
The Software Engineer will play a vital role in the software development lifecycle by ensuring that software solutions are developed in line with defined processes and industry standards to ensure the reliability, safety, and security of software products.
- Design and develop real-time embedded software solutions.
- Integrate and debug solutions on target hardware, addressing hardware/software integration issues.
- Target multiple real-time platforms (e.g., VxWorks, MicroC/OS, Linux, FreeRTOS) using Embedded C, C, C++ Linux, Free Artis, VX Works.
- Participate in various software lifecycle methodologies.
- Manage software requirements and traceability using industry best practices.
- Plan and execute software tests (Unit, Integration, System Level).
- Develop reusable software solutions.
- Document all aspects of the software production process according to company standards.
- A BEng/BSc (Hons) degree or equivalent in computing or a computing-related subject, or an alternative qualification with relevant experience.